To the Editor:—At the conclusion of their paper concerning kinking of transtracheal catheters. [1] Sdrales and Benumof state that “… continuously precurved *symbol* transtracheal jet ventilation *symbol* catheters may be commercially available soon….” In fact, a precurved transtracheal catheter designed by Ravussin and Freeman has been manufactured by VBM Medizintechnik, Germany, since 1985 [2] and is available in the United States from International Medical Development, Park City, Utah.

James P. Southwick, M.D., Director, Obstetric Anesthesia Service, Department of Anesthesiology, Utah Valley Regional Medical Center, 1034 North 500 W Provo, Utah 84604.

(Accepted for publication February 6, 1995.)

Sdrales L, Benumof JL: Prevention of kinking of a percutaneous transtracheal intravenous catheter. ANESTHESIOLOGY 82:288-291, 1995.
Ravussin P, Freeman J: A new transtracheal catheter for ventilation and resuscitation. Can Anaesth Soc J 32:60-64, 1985.